If you’re out and about looking at autumn leaves keep your eyes peeled for ‘galls’.

They are weird and wonderful looking lumps and growths found on the leaves and stems of plants as a result of the activities of another organism like a fungus or parasite. The most familiar of these are ‘oak apples.’ We’ll be revealing the secrets of galls on Autumnwatch next week programmes and would love to have some of your photos to talk about.